@andylu I'm glad you enjoyed the article. I could probably have a bit of a grump about it myself given half a chance (and did earlier with my husband😂 ) It is my main area of study after all, though I want to design the prostheses and medical appliances rather than code. I can't seem to get my head around programming, that's more my husbands area, though not for want of him attempting to get me to try.